Tectal fourth nerve palsy due to infarction.
D002531:Cerebellum / Q000473:pathology; D002544:Cerebral Infarction / Q000150:complications / Q000473:pathology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D020432:Trochlear Nerve Diseases / Q000209:etiology / Q000473:pathology*